USA. Florida. Columbia Co.: Ichetucknee Springs State Park. 6 mi. NW of Fort White off of C-238; ca. 1.3 mi. S of Headspring (at North Entrance), N of Grassy Hole Spring on E side of river in an area known as Grassy Flats or the Rice Marsh. T6S, R16E, Sec. 18.

USA. Florida. Polk Co.: Just E of the Hillsborough County line and Lake Branch of the South Prong Alafia River, ca. 5 mi. SW of Bradley Junction. T31S, R23E, Sec. 31.

Habitat:

Thick, herb-dominated association in wet clay - sand soil near base of dike of large, water-filled clay settling pond; pond used to store waste clays resulting from phosphate ore processing; area constantly wet due to seepage of water from pond.

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Definition: Vouchered Specimen

A voucher specimen is a pressed and thoroughly dried plant sample deposited in a herbarium, and is intended to be a permanent record supporting research purposes. A voucher may be a record of a plant's occurrence in a particular area, or a specific example of a plant used in a scientific investigation.

Proper vouchers display all the necessary attributes for complete identification of the plant, and are to be accompanied by accurate locality, habitat, collection time, and collector data.